Documentation › API Reference › Object › Entity › Emitter

GetRotationByVelocityMode

This function returns if the rotation mode is rotation by velocity.

Syntax

Returns

This function returns true if rotating by velocity, false if rotating by rotation speed.

Remarks

Please note: Rotating by velocity takes precedence over rotating by rotation speed, if both are set rotating by velocity will be used.

Example

--Create a window
window = Window:Create()
context = Context:Create(window)
world = World:Create()
camera = Camera:Create()
camera:Move(0,0,-3)

--Create an emitter
emitter = Emitter:Create(500) 

local material = Material:Load("Materials/Effects/spark.mat") 
if (material) then
        emitter:SetMaterial(material) 
        material:Release() 
end

emitter:SetVelocity(0,0,0,0)  --set base velocity to 0
emitter:SetVelocity(8,8,0,1)  --set a random velocity of .1 in the x and y directions
emitter:SetRotationByVelocityMode(true)
emitter:SetEmissionVolume(0,0,0)

while true do
        if window:Closed() or window:KeyHit(Key.Escape) then return false end
        
        Time:Update()
        world:Update()
        world:Render()
        
        --Press space to toggle mode
        if window:KeyHit(Key.Space) then
                emitter:SetRotationByVelocityMode(not emitter:GetRotationByVelocityMode()) 
        end
        
        context:Sync()
end